Securely convert your AU files to FLAC using our entirely local, in browser file converter. No download required, no data leaves your computer.
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Sun AU
AU (Audio File Format or Sun AU) is a simple audio file format introduced by Sun Microsystems. It's primarily used on Unix-based systems and retains audio data in three parts: a header, a variable-length annotation block, and the actual audio data, making it suitable for simple audio tasks and computer system alerts.
Free Lossless Audio Codec
FLAC (Free Lossless Audio Codec) is an open-source audio compression format that offers lossless compression, preserving the exact original audio quality. Unlike lossy formats, FLAC retains all audio data, ensuring high fidelity, but with significantly reduced file sizes compared to uncompressed audio formats.
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We support converting from AU to all of these formats
We support converting to FLAC from all of these formats
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